Stardust Assault Warrior (CT15-EN008) - 2018 Mega-Tins Limited

1 Tuner + 1+ non-Tuner monsters
When this card is Synchro Summoned while you control no other monsters: You can target 1 "Junk" monster in your GY; Special Summon it. You can only use this effect of "Stardust Assault Warrior" once per turn. If this card attacks a Defense Position monster, inflict piercing battle damage to your opponent.